calc_ERRs_gamma: Calculate energy return ratios for the gamma system boundary.

In MatthewHeun/Recca: R Energy Conversion Chain Analysis

Calculate energy return ratios for the gamma system boundary.

Description

Calculates energy return ratios for the gamma system boundary. Calculations are performed as shown in Equations 8, 9, and 10 in Heun, Owen, and Brockway. 2018. A physical supply-use table framework for energy analysis on the energy conversion chain. Applied Energy, vol 226, pp. 1134-1162.

Usage

calc_ERRs_gamma(
  .sutmats,
  U = "U",
  r_EIOU = "r_EIOU",
  V = "V",
  g = "g",
  S_units = "S_units",
  ger_gamma = "ger_gamma",
  ner_gamma = "ner_gamma",
  r_gamma = "r_gamma"
)

Arguments

.sutmats	a data frame containing columns for U and r_EIOU matrices and a g vector.
U	a string for the name of a column of U matrices in .sutmats. (Default is "U".)
r_EIOU	a string for the name of a column of r_EIOU matrices in .sutmats. (Default is "r_EIOU".)
V	a string for the name of a column of V matrices in .sutmats. (Default is "V".)
g	a string for the name of a column of g vector in .sutmats. (Default is "g".)
S_units	a string for the name of a column of S_units matrices in .sutmats. (Default is "S_units".)
ger_gamma	the name of the gross energy ratio column in output. (Default is "ger_gamma",
ner_gamma	the name of the net energy ratio column in output. (Default is "ner_gamma",)
r_gamma	the name of the ratio of energy ratios in output. (Default is "r_gamma",

Details

The energy return ratios for a given industry are calculated iff the units for inputs and outputs for that industry are unit-homogeneous. If units for inputs or outputs are heterogeneous for an industry, NA is the result.

Value

.sutmats with additional columns "ner_gamma", "ger_gamma", and "r_gamma".

Examples

library(tidyr)
library(Recca)
UKEnergy2000mats %>%
  spread(key = "matrix.name", value = "matrix") %>%
  calc_io_mats() %>%
  calc_ERRs_gamma()

MatthewHeun/Recca documentation built on Feb. 9, 2024, 6:18 p.m.